溶解浆纤维形态结构对其溶胀-溶解行为及流变性能的影响研究

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作者简介：钱新玉，在读硕士研究生；研究方向：溶解浆纤维的溶胀和溶解性能。

关键词：溶解浆；纤维形态结构；溶胀性能；溶解性能；流变性能中图分类号：TS71 文献标识码：A DOI：10.11980/j.issn.0254-508X.2025.08.011

Study on the Effect of Fiber Morphological Structure on the Swelling-dissolution Behavior and Spinnability of Dissolving Pulp

QIAN Xinyu 1，2，3 YANG Shuo²* WANG Xin1，3 GUO Yuqian1.3 CHENG Yun1，3 HOU Leilei1，3 CHEN Linghua1.3 ZHANG Hongjie1，.3 *

（1.ChinNallpdRsechsiuteCdein;holfLghtdustrieedEeKeyLabfBiobasedberaterials，hinaextiledustryKeyLbofHghperformanceFibersWet-aidouoenaterials，nKy LabofPulpandPaper，Tianjin UniversityofScienceandTechnology，Tianjin，3OO457;3.National EngineeringLabfor Pulp andPaper，Beijing，） （ E-mail： yangshuo1018@tust. edu.cn； hongjiezhang@cnppri.com）

Abstract：Thefiber（S-HK，S-PHK-R30，-HK-R50）morpholoicalsructureofthesoftwoodpre-hydrolysisraftpulpwasregulatedbyusingfibefractioaionTeifueneoffiberszedestuctuefdisovingpulpibsontheswellngdisolutioeaviod logicalpropertisicellos-NO-watersolutionsuderteLyocellprocesasinvestigatedTersultssowedthatomparedwith S-PHK-R30，the average length of S-PHK-R50 decreased by 50. 4% ，and the specific surface area increased by 123.6% . This resulted in a about 10O percentage points increase in NMMO absorption value and a 25min reduction in dissolution time when the dissolving pulp was swolleninamassratioof 70% NMMO solution for2O min. Thesmall fiber size and high specific surface area were beneficial for promoting thepenetration of aqueous NMMO solution inside the pulp fibers， therebyachieving abetter swelling effect and reducing the required dissolution time.In addition，the fibermorphological structure between fiber fractions of dissolving pulp significantly affected the steady-staterheological properties ofcellulose-NMMO-watersolutions 《中国造纸》2025年第44卷第8期

制浆与造纸

but did not affect the dynamic rheological properties. Key words：dissolvingpulp;fiber morphologicalstructure;sweling property；disolution property;rheologicalproperties

Lyocell纤维是将天然纤维素溶解在N-甲基吗啉-N-氧化物（NMMO）水溶液中，再经过干喷湿纺工艺制备而成的再生纤维素纤维，因其原料可再生、生产过程无污染、产品弃后可生物降解以及卓越的纤维性能被誉为21世纪很有发展前景的“绿色纤维”。（剩余10707字）